Multi-modules reload

Hi everyone!

I have a nice question. Imagine that u have a multi-multi-multi-site (hmm 40 - 80? yeah...) sites on drupal multi.... and you've done some change in one-two modules. You will be entering every page to reload modules?

My question: Is there any possible to automate this? For example from yours main drupal multi-site get update modules (reload) on all sites? Or mayby it is possible with cron?

Help...this will very very helpfull...